Book mark sync to pc's?

HI, so i got 2 pc's laptop and desktop when i'm home i usauly use the desktop and it got book marks, i alos use the same account on opera with the laptop however i have two separate book marks on two seprate machines. ! how can i make desktop book marks the same and in case i add or delete a book mark on any of the two machine the sync is 100% the same on both ?